Engine heat exchange system and automobile
By setting up a thermostat module in the engine heat exchange system, the coolant temperature is monitored in real time and whether to cool down is determined based on the temperature threshold, the problems of extended engine warm-up time and ambient temperature vibration are solved, and a more efficient cooling system is achieved .
Patent Information
- Application Number
- CN202421497403.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing engine cooling system still cools down the coolant with a lower temperature when the engine is just started or the coolant temperature is low, resulting in the engine heating time being extended and the ambient temperature vibrates, affecting the normal operation of the engine.
In the engine heat exchange system, a thermostat module is set to obtain the coolant temperature in the cylinder head water jacket in real time. When the temperature is lower than the threshold, the coolant flows directly back to the cylinder water jacket; when the temperature is greater than or equal to the threshold, the coolant is cooled through the first heat exchange module.
In this way, the engine warm-up time is shortened, the vibration risk of the engine ambient temperature is reduced, and the engine is operated normally.
Smart Images
Figure CN222501938U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of automobile engine cooling, and specifically relates to an engine heat exchange system and an automobile. Background Art
[0002] The engine of a car generates a lot of heat during operation. In existing solutions, an engine cooling system is set up to cool the engine. However, when the engine is just started or the engine coolant itself is at a low temperature, if the engine cooling system still cools the coolant at a low temperature, the warm-up time of the engine will be prolonged or the ambient temperature in the engine will fluctuate, affecting the normal operation of the engine. Utility Model Content
[0003] One of the inventive purposes of the present application is to provide an engine heat exchange system, wherein a thermostat module is arranged between a first heat exchange module and a cylinder water jacket, and the temperature of the cylinder head water jacket is obtained in real time through the thermostat module. When the temperature of the cylinder head water jacket meets the cooling requirements, the coolant in the cylinder head water jacket is cooled, thereby shortening the warm-up process of the engine and reducing the risk of engine ambient temperature vibration.
[0004] Another invention object of the present application is to provide a vehicle comprising the above-mentioned engine heat exchange system.
[0005] According to an embodiment of the present application, a first aspect provides an engine heat exchange system, the engine heat exchange system comprising:
[0006] Cylinder block water jacket and cylinder head water jacket;
[0007] a first heat exchange module, which is in communication with the cylinder head water jacket and the cylinder body water jacket, respectively, and is used to cool the coolant discharged from the cylinder head water jacket, so that the cooled coolant can flow to the cylinder body water jacket;
[0008] A first driving element is disposed between the first heat exchange module and the cylinder water jacket, and the first driving element is used to transport the cooled coolant in the first heat exchange module to the cylinder water jacket;
[0009] A thermostat module is respectively connected to the cylinder head water jacket, the first heat exchange module and the first driving element. When the thermostat module obtains that the temperature of the coolant in the cylinder head water jacket is less than a threshold value, the thermostat module can control the coolant in the cylinder head water jacket to directly enter the first driving element through the thermostat module. When the thermostat module obtains that the temperature of the coolant in the cylinder head water jacket is greater than or equal to a threshold value, the thermostat module can control the coolant in the cylinder head water jacket to enter the first driving element after being cooled in the first heat exchange module.
[0010] In one embodiment, the thermostat module includes a control valve. When the thermostat module obtains that the temperature of the coolant in the cylinder head water jacket is lower than a threshold value, the control valve in the thermostat module can control the first heat exchange module and the thermostat module to be closed. When the thermostat module obtains that the temperature of the coolant in the cylinder head water jacket is greater than or equal to a threshold value, the control valve in the thermostat module can control the first heat exchange module and the thermostat module to be connected.
[0011] The first heat exchange module includes an engine radiator, which absorbs heat and cools the coolant flowing out of the cylinder head water jacket; and / or the first driving element is a water pump.
[0012] In one embodiment, the engine heat exchange system also includes a second heat exchange module, which is connected to the cylinder head water jacket and the cylinder block water jacket respectively. The second heat exchange module cools the engine oil in the engine through the coolant in the cylinder block water jacket, and the coolant after absorbing heat flows back to the cylinder head water jacket.
[0013] In one embodiment, the second heat exchange module includes an oil cooler.
[0014] In one embodiment, the outlet of the oil cooler is also connected to the turbocharger and is provided with a second driving element, the second driving element is used to transport the coolant in the oil cooler to the turbocharger, the turbocharger is connected to the first driving element, and the coolant after cooling the turbocharger flows back to the first driving element.
[0015] In one embodiment, the engine heat exchange system also includes a third heat exchange module, which is respectively connected to the cylinder head water jacket and the first driving element, and the third heat exchange module includes a whole vehicle waste heat recovery module, and the whole vehicle waste heat recovery module is used to absorb heat from the coolant entering the third heat exchange module, and the coolant after absorbing heat flows back to the cylinder water jacket through the first driving element.
[0016] In one embodiment, the vehicle waste heat recovery module in the third heat exchange module arrangement includes a heater core.
[0017] In one embodiment, the engine heat exchange system also includes an expansion water tank, which is connected to the inlet of the first driving element. A first one-way valve is arranged between the expansion water tank and the inlet of the first driving element, and the first one-way valve is used to prevent the coolant entering the first driving element from flowing back to the expansion water tank.
[0018] In one embodiment, the expansion water tank is also connected to the third heat exchange module, and a second one-way valve is provided between the expansion water tank and the third heat exchange module, and the second one-way valve is used to prevent the coolant in the third heat exchange module from flowing back to the expansion water tank.
[0019] According to an embodiment of the present application, a second aspect provides a car, comprising the engine heat exchange system.
[0020] The engine heat exchange system of the present application is provided with a thermostat module between the cylinder head water jacket and the first heat exchange module, and the temperature of the coolant in the cylinder head water jacket can be obtained in real time through the thermostat module. When the coolant temperature obtained by the thermostat module is lower than the preset threshold, the coolant in the cylinder head water jacket directly flows back to the cylinder body water jacket; when the temperature of the coolant in the cylinder head water jacket is greater than or equal to the threshold, the coolant in the cylinder head water jacket is cooled by the first heat exchange module, and the cooled coolant flows back to the cylinder body water jacket. The researchers intend to shorten the warm-up time of the engine and reduce the risk of ambient temperature vibration of the engine in this way compared to existing solutions. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of a module of an engine cooling system in an embodiment of the present application;
[0022] Figure 2 This is a schematic diagram of a module of an engine cooling system in another embodiment of the present application;
[0023] Figure 3 This is a module schematic diagram of an engine cooling system in another embodiment of the present application.
[0024] Description of Figure Numbers:
[0025] 110, cylinder water jacket; 120, cylinder head water jacket;
[0026] 200, first heat exchange module; 210, engine radiator;
[0027] 300, first driving element; 400, thermostat module;
[0028] 500, second heat exchange module; 510, oil cooler; 520, second driving element;
[0029] 600, turbocharger; 700, third heat exchange module; 710, vehicle waste heat recovery module;
[0030] 800, expansion water tank; 810, first one-way valve; 820, second one-way valve. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0032] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention.
[0033] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0034] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0035] As shown in the background technology, the engine of a car generates a lot of heat during operation. In the existing solution, an engine cooling system is set to cool the engine. When the engine is just started or the temperature of the engine coolant itself is low, if the engine cooling system still cools the coolant with a low temperature, this will extend the warm-up time of the engine or cause the ambient temperature in the engine to vibrate, affecting the normal operation of the engine. In order to better solve this problem, the researchers in this application proposed an engine cooling system. In this system, when the temperature of the coolant in the cylinder head water jacket is greater than or equal to the threshold, the coolant in the cylinder head water jacket is cooled down; and when the temperature of the coolant in the cylinder head water jacket is less than the threshold, the coolant in the cylinder head water jacket directly flows back to the cylinder body water jacket. The researchers intend to shorten the warm-up time of the engine and reduce the risk of ambient temperature vibration of the engine in this way compared to the existing solution.
[0036] like Figure 1 As shown, Figure 1Schematic diagram of a module of an engine cooling system in an embodiment of the present application. In this embodiment, the engine cooling system includes: a cylinder water jacket 110 and a cylinder head water jacket 120, a first heat exchange module 200, a first drive element 300 and a thermostat module 400, wherein the cylinder water jacket 110 and the cylinder head water jacket 120 contain coolant, the first heat exchange module 200 is used to cool the coolant in the cylinder head water jacket 120, the first drive element 300 enables the coolant to circulate between the cylinder water jacket 110 and the cylinder head water jacket 120, and the thermostat module 400 is used to obtain the temperature of the coolant in the cylinder head water jacket 120.
[0037] In this embodiment, the researchers intend to obtain the temperature information of the coolant in the cylinder head water jacket 120 through the thermostat module 400, and determine whether to cool the coolant in the cylinder head water jacket 120 according to the temperature information. When the temperature of the coolant in the cylinder head water jacket 120 obtained by the thermostat module 400 is low, the coolant in the cylinder head water jacket 120 directly flows back to the cylinder body water jacket 110; and when the temperature of the coolant in the cylinder head water jacket 120 obtained is high, the coolant in the cylinder head water jacket 120 will be cooled by the first heat exchange module 200 and then flow back to the cylinder body water jacket 110.
[0038] Specifically, the first heat exchange module 200 is communicated with the cylinder head water jacket 120 and the cylinder body water jacket 110 respectively, wherein the first heat exchange module 200 is used to cool the coolant discharged from the cylinder head water jacket 120, and the cooled coolant can flow to the cylinder body water jacket 110; the first drive element 300 is arranged between the first heat exchange module 200 and the cylinder body water jacket 110, and the first drive element 300 is used to transport the cooled coolant in the first heat exchange module 200 to the cylinder body water jacket 110; the thermostat module 400 is respectively connected to the cylinder head water jacket 120 and the first heat exchange module The block 200 is connected to the first driving element 300, wherein when the thermostat module 400 obtains the coolant temperature in the cylinder head water jacket 120 is less than a threshold value, the thermostat module 400 can control the coolant in the cylinder head water jacket 120 to directly enter the first driving element 300 through the thermostat module 400, and when the thermostat module 400 obtains the coolant temperature in the cylinder head water jacket 120 is greater than or equal to the threshold value, the thermostat module 400 can control the coolant in the cylinder head water jacket 120 to enter the first driving element 300 after cooling in the first heat exchange module 200. The first driving element 300 can be a water pump.
[0039] In this embodiment, a thermostat module 400 is provided between the cylinder head water jacket 120 and the first heat exchange module 200, and the temperature of the coolant in the cylinder head water jacket 120 can be obtained in real time through the thermostat module 400. When the coolant temperature obtained by the thermostat module 400 is lower than the preset threshold, the coolant in the cylinder head water jacket 120 directly flows back to the cylinder body water jacket 110; when the temperature of the coolant in the cylinder head water jacket 120 is greater than or equal to the threshold, the coolant in the cylinder head water jacket 120 is cooled by the first heat exchange module 200, and the cooled coolant flows back to the cylinder body water jacket 110. The researchers intend to shorten the warm-up time of the engine and reduce the risk of ambient temperature vibration of the engine in this way compared with the existing solution. It should be noted that, in this embodiment, by arranging the thermostat module 400 at the cylinder head water jacket 120, the temperature of the coolant in the cylinder head water jacket 120 can be obtained in advance, thereby avoiding the problem that the low-temperature coolant in the cylinder head water jacket 120 enters the first heat exchange module 200 and flows back to the cylinder body water jacket 110 after being cooled. In addition, the threshold value in the thermostat module 400 can be a predetermined value.
[0040] Furthermore, in one embodiment, the thermostat module 400 includes a control valve, wherein when the thermostat module 400 obtains that the temperature of the coolant in the cylinder head water jacket 120 is lower than a threshold value, the control valve in the thermostat module 400 can control the first heat exchange module 200 and the thermostat module 400 to be closed, and when the thermostat module 400 obtains that the temperature of the coolant in the cylinder head water jacket 120 is greater than or equal to the threshold value, the control valve in the thermostat module 400 can control the first heat exchange module 200 and the thermostat module 400 to be connected; the first heat exchange module 200 includes an engine radiator 210, and the engine radiator 210 absorbs heat and cools down the coolant flowing out of the cylinder head water jacket 120.
[0041] In this embodiment, a control valve is provided in the thermostat module 400, and the control valve can be used to control the coolant to flow between the first heat exchange module 200 and the first driving element 300, thereby preventing the coolant with a lower temperature in the cylinder head water jacket 120 from being absorbed and cooled in the first heat exchange module 200 and then flowing back to the cylinder body water jacket 110, thereby prolonging the warm-up time of the engine or affecting the oscillation of the ambient temperature of the engine.
[0042] In addition, in this embodiment, the engine radiator 210 in the first heat exchange module 200 can cool the coolant entering the first heat exchange module 200. The engine radiator 210 can cool the coolant by a fan.
[0043] In one embodiment, see Figure 2As shown, the engine heat exchange system also includes a second heat exchange module 500, which is connected to the cylinder head water jacket 120 and the cylinder body water jacket 110 respectively. The second heat exchange module 500 cools the engine oil in the engine through the coolant in the cylinder body water jacket 110, and the coolant after absorbing heat flows back to the cylinder head water jacket 120.
[0044] In this embodiment, if the temperature of the oil lubricating the engine parts is too high during the operation of the engine, the oil will be at risk of deterioration, so the oil needs to be cooled. In this embodiment, the second heat exchange module 500 set by the researchers is used to cool the oil. Since the temperature of the coolant in the cylinder water jacket 110 is lower than the temperature in the cylinder head water jacket 120, the second heat exchange module 500 obtains coolant from the cylinder water jacket 110 and uses it to absorb the temperature of the oil. At the same time, the coolant that absorbs the heat of the oil can flow back to the cylinder head water jacket 120, and the coolant entering the cylinder head water jacket 120 can increase the flow of coolant entering the first heat exchange module 200.
[0045] In one embodiment, the second heat exchange module 500 includes an oil cooler 510 .
[0046] In this embodiment, the oil is cooled by setting an oil cooler in the second heat exchange module 500, that is, the coolant entering the oil cooler 510 can exchange heat with the oil entering the oil cooler 510, thereby cooling the oil. The oil cooler 510 can be a liquid-cooled oil cooler, such as a plate cooler or a shell and tube cooler.
[0047] Further, in one embodiment, see Figure 2 As shown, the outlet of the oil cooler 510 is also connected to the turbocharger 600 and is provided with a second drive element 520, which is used to deliver the coolant in the oil cooler 510 to the turbocharger 600. The turbocharger 600 is connected to the first drive element 300, and the coolant after cooling the turbocharger 600 flows back to the first drive element 300. The second drive element 520 may be an electronic water pump.
[0048] In this embodiment, when the engine suddenly stops, the heat of the turbocharger 600 cannot be released, and the intermediate of the turbocharger 600 will be at risk of coking. To this end, in this embodiment, the researchers set a second drive element 520 between the oil cooler 510 and the turbocharger 600. When the engine suddenly stops, the second drive element 520 can deliver the coolant in the second heat exchange module 500 to the turbocharger 600, thereby reducing the risk of coking of the turbocharger 600. At the same time, the coolant cooling the turbocharger 600 will enter the first drive element 300, and finally flow back to the cylinder water jacket 110 to reduce the loss of coolant.
[0049] In one embodiment, see Figure 3 As shown, the engine heat exchange system also includes a third heat exchange module 700, which is connected to the cylinder head water jacket 120 and the first drive element 300 respectively. The third heat exchange module 700 includes a vehicle waste heat recovery module 710, and the vehicle waste heat recovery module 710 is used to absorb heat from the coolant entering the third heat exchange module 700. The coolant after absorbing heat flows back to the cylinder water jacket 110 through the first drive element 300.
[0050] In this embodiment, in order to better utilize the heat generated by the engine, the researchers also set up a third heat exchange module 700, which includes a vehicle waste heat recovery module 710, that is, the high-temperature coolant in the cylinder head water jacket 120 can enter the vehicle waste heat recovery module 710, and the heat of the coolant is absorbed by the vehicle waste heat recovery module 710, thereby realizing heat recovery. For example, the vehicle waste heat recovery module 710 can include a heater core.
[0051] In one embodiment, the engine heat exchange system also includes an expansion water tank 800, which is connected to the inlet of the first drive element 300. A first one-way valve 810 is arranged between the expansion water tank 800 and the inlet of the first drive element 300. The first one-way valve 810 is used to prevent the coolant entering the first drive element 300 from flowing back to the expansion water tank 800.
[0052] In this embodiment, water is replenished to the inlet of the first driving element 300 through the expansion water tank 800, so that the first driving element 300 can have a large water pressure at the inlet. In addition, in this embodiment, a first check valve 810 is provided between the expansion water tank 800 and the inlet of the first driving element 300, which can prevent the coolant from flowing back into the expansion water tank 800, resulting in the risk of overflow of the expansion water tank 800.
[0053] In another embodiment, the expansion water tank 800 is connected to the third heat exchange module 700 , and a second one-way valve 820 is arranged between the expansion water tank 800 and the third heat exchange module 700 . The second one-way valve 820 is used to prevent the coolant in the third heat exchange module 700 from flowing back to the expansion water tank 800 .
[0054] In this embodiment, the researchers connected the expansion water tank 800 with the third heat exchange module 700, and replenished water to the vehicle waste heat recovery module 710 in the third heat exchange module 700 through the expansion water tank 800 to increase the flow of coolant in the vehicle waste heat recovery module 710. In addition, the second one-way valve 820 is arranged between the expansion water tank 800 and the third heat exchange module 700, which can prevent the coolant in the third heat exchange module 700 from flowing back to the expansion water tank 800, resulting in the risk of overflow of the expansion water tank 800.
[0055] The present application also proposes a car, wherein the above engine heat exchange system is installed in the car.
[0056] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0057] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.
Claims
1. An engine heat exchange system, characterized in that: The engine heat exchange system comprises: Cylinder body water jacket (110) and cylinder head water jacket (120); A first heat exchange module (200) is respectively connected to the cylinder head water jacket (120) and the cylinder body water jacket (110), and the first heat exchange module (200) is used to cool down the coolant discharged from the cylinder head water jacket (120), so that the cooled coolant can flow to the cylinder body water jacket (110); A first driving element (300) is disposed between the first heat exchange module (200) and the cylinder water jacket (110), the first driving element (300) being used to transport the cooled coolant in the first heat exchange module (200) to the cylinder water jacket (110); A thermostat module (400) is respectively connected to the cylinder head water jacket (120), the first heat exchange module (200) and the first drive element (300). When the thermostat module (400) obtains that the temperature of the coolant in the cylinder head water jacket (120) is less than a threshold value, the thermostat module (400) can control the coolant in the cylinder head water jacket (120) to directly enter the first drive element (300) through the thermostat module (400). When the thermostat module (400) obtains that the temperature of the coolant in the cylinder head water jacket (120) is greater than or equal to a threshold value, the thermostat module (400) can control the coolant in the cylinder head water jacket (120) to enter the first drive element (300) after being cooled in the first heat exchange module (200).
2. The engine heat exchange system according to claim 1, characterized in that: The thermostat module (400) comprises a control valve, and when the thermostat module (400) obtains that the temperature of the coolant in the cylinder head water jacket (120) is lower than a threshold value, the control valve in the thermostat module (400) can control the first heat exchange module (200) and the thermostat module (400) to be closed, and when the thermostat module (400) obtains that the temperature of the coolant in the cylinder head water jacket (120) is greater than or equal to a threshold value, the control valve in the thermostat module (400) can control the first heat exchange module (200) and the thermostat module (400) to be connected; The first heat exchange module (200) comprises an engine radiator (210), and the engine radiator (210) absorbs heat and cools down the coolant flowing out of the cylinder head water jacket (120); and / or the first driving element (300) is a water pump.
3. The engine heat exchange system according to claim 1, characterized in that: The engine heat exchange system further comprises a second heat exchange module (500), wherein the second heat exchange module (500) is respectively connected to the cylinder head water jacket (120) and the cylinder body water jacket (110), and the second heat exchange module (500) cools down the engine oil in the engine through the coolant in the cylinder body water jacket (110), and the coolant after absorbing heat flows back to the cylinder head water jacket (120).
4. The engine heat exchange system according to claim 3, characterized in that: The second heat exchange module (500) includes an oil cooler (510).
5. The engine heat exchange system according to claim 4, characterized in that: The outlet of the oil cooler (510) is also connected to the turbocharger (600) and is provided with a second drive element (520). The second drive element (520) is used to transport the coolant in the oil cooler (510) to the turbocharger (600). The turbocharger (600) is connected to the first drive element (300), and the coolant after cooling the turbocharger (600) flows back to the first drive element (300).
6. The engine heat exchange system according to claim 1, characterized in that: The engine heat exchange system further comprises a third heat exchange module (700), wherein the third heat exchange module (700) is respectively connected to the cylinder head water jacket (120) and the first drive element (300), and the third heat exchange module (700) comprises a whole vehicle waste heat recovery module (710), wherein the whole vehicle waste heat recovery module (710) is used to absorb heat from the coolant entering the third heat exchange module (700), and the coolant after absorbing heat flows back to the cylinder water jacket (110) through the first drive element (300).
7. The engine heat exchange system according to claim 6, characterized in that: The vehicle waste heat recovery module (710) in the third heat exchange module (700) includes a heater core.
8. The engine heat exchange system according to claim 6, characterized in that: The engine heat exchange system further comprises an expansion water tank (800), wherein the expansion water tank (800) is connected to an inlet of the first drive element (300), and a first one-way valve (810) is provided between the expansion water tank (800) and the inlet of the first drive element (300), wherein the first one-way valve (810) is used to prevent the coolant entering the first drive element (300) from flowing back to the expansion water tank (800).
9. The engine heat exchange system according to claim 8, characterized in that: The expansion water tank (800) is also connected to the third heat exchange module (700), and a second one-way valve (820) is provided between the expansion water tank (800) and the third heat exchange module (700), and the second one-way valve (820) is used to prevent the coolant in the third heat exchange module (700) from flowing back to the expansion water tank (800).
10. An automobile, characterized in that: The automobile comprises the engine heat exchange system as claimed in any one of claims 1 to 9.